X-Git-Url: https://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fbackends%2Fjvm%2Fgenerator-jvm.c;h=cb8eeef564ba2925b7eb5701002253f79cdd47d4;hb=35e75d29be18a7355aaaea9e146f3fda1d91857f;hp=2456aa79cd9bafd5a6b4e71f26c5715ea250e9e8;hpb=8c59e1e41700802575cefb289600028909c5ffc2;p=dsw-obn.git

diff --git a/src/backends/jvm/generator-jvm.c b/src/backends/jvm/generator-jvm.c
index 2456aa7..cb8eeef 100644
--- a/src/backends/jvm/generator-jvm.c
+++ b/src/backends/jvm/generator-jvm.c
@@ -8,8 +8,8 @@
 
 #include <gc.h>
 
-#include "../../../include/oberon.h"
 #include "../../oberon-internals.h"
+#include "../../generator.h"
 #include "generator-jvm.h"
 #include "generator-jvm-abi.h"
 #include "generator-jvm-asm.h"
@@ -492,6 +492,8 @@ oberon_generator_init_type(oberon_context_t * ctx, oberon_type_t * type)
 		case OBERON_TYPE_STRING:
 		case OBERON_TYPE_SET:
 		case OBERON_TYPE_NIL:
+		case OBERON_TYPE_SYSTEM_BYTE:
+		case OBERON_TYPE_SYSTEM_PTR:
 			break;
 		case OBERON_TYPE_RECORD:
 			m = type -> module -> gen_mod;
@@ -630,6 +632,13 @@ oberon_generator_init_var(oberon_context_t * ctx, oberon_object_t * var)
 	struct gen_class * c;
 	char * name = var -> name;
 	gen_type_t * t = var -> type -> gen_type;
+
+	assert(name);
+	if(t == NULL)
+	{
+		gen_error("uninitialized type class %i", var -> type -> class);
+	}
+
 	switch(var -> class)
 	{
 		case OBERON_CLASS_VAR_PARAM:
@@ -707,6 +716,8 @@ oberon_generator_init_module(oberon_context_t * ctx, oberon_module_t * mod)
 	fprintf(class -> fp, ".class %s\n", mod -> name);
 	fprintf(class -> fp, ".super java/lang/Object\n\n");
 
+	fprintf(class -> fp, ".field private static $INITIALIZED$ Z\n\n");
+
 	m -> class = class;
 
 	c -> current_m = m;
@@ -724,19 +735,36 @@ push_expr(gen_proc_t * p, oberon_expr_t * expr);
 void
 oberon_generate_begin_module(oberon_context_t * ctx)
 {
-	struct gen_class * class = ctx -> mod -> gen_mod -> class;
-	gen_proc_t * p = jvm_create_proc(class);
+	gen_proc_t * p;
+	int label_cont;
+	struct gen_class * class;
 
-	jvm_generate_function_header(p, "public", "<init>", "()V");
-	jvm_alloc_register_untyped(p -> rf, false);
-	jvm_generate(p, 0, 1, "aload_0");
-	jvm_generate(p, 1, 0, "invokespecial java/lang/Object/<init>()V");
+	class = ctx -> mod -> gen_mod -> class;
+
+	p = jvm_create_proc(class);
+	jvm_generate_function_header(p, "public static", "BEGIN", "()V");
+
+	label_cont = jvm_new_label_id(p);
+	jvm_generate(p, 0, 1, "getstatic %s/$INITIALIZED$ Z", class -> full_name);
+	jvm_generate(p, 1, 0, "ifeq L%i", label_cont);
+	jvm_generate(p, 0, 0, "return");
+	jvm_generate_label(p, label_cont);
+
+	jvm_generate(p, 0, 1, "iconst_1");
+	jvm_generate(p, 1, 0, "putstatic %s/$INITIALIZED$ Z", class -> full_name);
 
 	/* Инициализация переменных объявленных в модуле */
 	oberon_object_t * x = ctx -> mod -> decl -> list -> next;
 	while(x != NULL)
 	{
-		if(x -> class == OBERON_CLASS_VAR)
+		if(x -> class == OBERON_CLASS_MODULE)
+		{
+			if(!x -> module -> intrinsic)
+			{
+				jvm_generate(p, 0, 0, "invokestatic %s/BEGIN()V", x -> module -> gen_mod -> class -> full_name);
+			}
+		}
+		else if(x -> class == OBERON_CLASS_VAR)
 		{
 			jvm_generate_var_initialization(p, x -> gen_var);
 			if(x -> type -> class == OBERON_TYPE_ARRAY
@@ -760,6 +788,14 @@ oberon_generate_end_module(oberon_context_t * ctx)
 
 	jvm_generate(p, 0, 0, "return");
 	jvm_generate_function_end(class -> p);
+
+	p = jvm_create_proc(class);
+	jvm_generate_function_header(p, "private", "<init>", "()V");
+	jvm_alloc_register_untyped(p -> rf, false);
+	jvm_generate(p, 0, 1, "aload_0");
+	jvm_generate(p, 1, 0, "invokespecial java/lang/Object/<init>()V");
+	jvm_generate(p, 0, 0, "return");
+	jvm_generate_function_end(class -> p);
 }
 
 /*
@@ -836,10 +872,12 @@ jvm_generate_local_object(gen_proc_t * p, oberon_object_t * x)
 		case OBERON_CLASS_VAR:
 			jvm_generate_var(v);
 			break;
+		case OBERON_CLASS_CONST:
+		case OBERON_CLASS_TYPE:
 		case OBERON_CLASS_PROC:
 			break;
 		default:
-			gen_error("jvm_generate_local_initialization: wat");
+			gen_error("jvm_generate_local_initialization: wat class %i", x -> class);
 			break;
 	}
 }
@@ -864,10 +902,12 @@ jvm_generate_local_initialization(gen_proc_t * p, oberon_object_t * x)
 		case OBERON_CLASS_VAR:
 			jvm_generate_var_initialization(p, v);
 			break;
+		case OBERON_CLASS_CONST:
+		case OBERON_CLASS_TYPE:
 		case OBERON_CLASS_PROC:
 			break;
 		default:
-			gen_error("jvm_generate_local_initialization: wat");
+			gen_error("jvm_generate_local_initialization: wat class %i", x -> class);
 			break;
 	}
 
@@ -914,7 +954,7 @@ oberon_generate_begin_proc(oberon_context_t * ctx, oberon_object_t * proc)
 
 	jvm_generate_procedure_frame(proc);
 
-	/* Создание парамеров и переменных */
+	/* Создание параметров и переменных */
 	var = proc -> scope -> list -> next;
 	while(var)
 	{
@@ -942,6 +982,7 @@ oberon_generate_end_proc(oberon_context_t * ctx)
 	m = ctx -> mod -> gen_mod;
 	p = m -> class -> p;
 
+	oberon_generate_trap(ctx, -4);
 	jvm_generate_function_end(p);
 }
 
@@ -1020,13 +1061,16 @@ push_varptr(gen_proc_t * p, oberon_expr_t * expr)
 			jvm_generate_ldst_prepare(p, expr -> item.var -> gen_var);
 			break;
 		case MODE_INDEX:
-			push_item(p, (oberon_item_t *) expr -> item.parent);
+			push_item(p, expr -> item.parent);
 			push_expr(p, expr -> item.args);
 			break;
 		case MODE_FIELD:
-			push_item(p, (oberon_item_t *) expr -> item.parent);
+			push_item(p, expr -> item.parent);
 			jvm_generate_ldst_prepare(p, expr -> item.var -> gen_var);
 			break;
+		case MODE_DEREF:
+			push_varptr(p, (oberon_expr_t *) expr -> item.parent);
+			break;
 		default:
 			gen_error("push_varptr: wat %i", expr -> item.mode);
 			break;
@@ -1175,6 +1219,45 @@ jvm_generate_cast_type(gen_proc_t * p, oberon_type_t * from, oberon_type_t * to)
 	}
 }
 
+static void
+jvm_generate_hard_cast_type(gen_proc_t * p, oberon_type_t * from, oberon_type_t * to)
+{
+	if(from -> class == OBERON_TYPE_REAL
+		&& (to -> class == OBERON_TYPE_INTEGER || to -> class == OBERON_TYPE_SYSTEM_BYTE))
+	{
+		char postfix = jvm_get_postfix(to);
+		if(from -> size <= 4)
+		{
+			jvm_generate(p, 1, 1, "invokestatic java/lang/Float/floatToIntBits(F)I");
+			jvm_generate_cast_prefix(p, 'i', postfix);
+		}
+		else
+		{
+			jvm_generate(p, 2, 2, "invokestatic java/lang/Double/doubleToIntBits(D)J");
+			jvm_generate_cast_prefix(p, 'l', postfix);
+		}
+	}
+	else if((from -> class == OBERON_TYPE_INTEGER || from -> class == OBERON_TYPE_SYSTEM_BYTE)
+		&& to -> class == OBERON_TYPE_REAL)
+	{
+		char prefix = jvm_get_prefix(from);
+		if(to -> size <= 4)
+		{
+			jvm_generate_cast_prefix(p, prefix, 'i');
+			jvm_generate(p, 1, 1, "invokestatic java/lang/Float/intBitsToFloat(I)F");
+		}
+		else
+		{
+			jvm_generate_cast_prefix(p, prefix, 'l');
+			jvm_generate(p, 2, 2, "invokestatic java/lang/Double/longBitsToDouble(J)D");
+		}
+	}
+	else
+	{
+		jvm_generate_cast_type(p, from, to);
+	}
+}
+
 static void
 push_item(gen_proc_t * p, oberon_item_t * item)
 {
@@ -1538,36 +1621,35 @@ jvm_generate_in(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b)
 }
 
 static void
-jvm_generate_ash(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b)
+jvm_generate_shift(gen_proc_t * p, int op, oberon_expr_t * a, oberon_expr_t * b)
 {
 	oberon_type_t * t = a -> result;
 	int cell_size = jvm_cell_size_for_type(t);
 	char prefix = jvm_get_prefix(t);
-	int label_else = jvm_new_label_id(p);
-	int label_end = jvm_new_label_id(p);
-
-	/* if b < 0 then a << b else a >> b end */
+	char dt = jvm_get_type_of_prefix(prefix);
 
 	push_expr(p, a);
+	jvm_generate_cast_type(p, a -> result, t);
 	push_expr(p, b);
-	if(cell_size == 1)
-	{
-		jvm_generate(p, cell_size, 2 * cell_size, "dup");
-	}
-	else
+	jvm_generate_cast_type(p, b -> result, t);
+
+	char * opname;
+	switch(op)
 	{
-		jvm_generate(p, cell_size, 2 * cell_size, "dup2");
+		case OP_ASH:
+			opname = "ASH";
+			break;
+		case OP_LSH:
+			opname = "LSH";
+			break;
+		case OP_ROT:
+			opname = "ROT";
+			break;
+		default:
+			gen_error("jvm_generate_shift: invalid op %i", op);
 	}
-	jvm_generate_push_int_size(p, 0, t -> size);
-	jvm_generate_compare_op(p, t, OP_LSS);
 
-	jvm_generate(p, cell_size, 0, "ifne L%i", label_else);
-	jvm_generate(p, 2 * cell_size, cell_size, "%cshl", prefix);
-	jvm_generate(p, 0, 0, "goto L%i", label_end);
-	jvm_generate_label(p, label_else);
-	jvm_generate_abs(p, prefix);	
-	jvm_generate(p, 2 * cell_size, cell_size, "%cshr", prefix);
-	jvm_generate_label(p, label_end);
+	jvm_generate(p, 2 * cell_size, cell_size, "invokestatic SYSTEM/%s(%c%c)%c", opname, dt, dt, dt);
 }
 
 static void
@@ -1593,6 +1675,10 @@ push_operator(gen_proc_t * p, oberon_oper_t * oper)
 			push_expr(p, oper -> left);
 			jvm_generate_cast_type(p, oper -> left -> result, oper -> result);
 			break;
+		case OP_HARDCAST:
+			push_expr(p, oper -> left);
+			jvm_generate_hard_cast_type(p, oper -> left -> result, oper -> result);
+			break;
 		case OP_COMPLEMENTATION:
 		case OP_UNARY_MINUS:
 		case OP_LOGIC_NOT:
@@ -1648,7 +1734,9 @@ push_operator(gen_proc_t * p, oberon_oper_t * oper)
 			break;
 
 		case OP_ASH:
-			jvm_generate_ash(p, oper -> left, oper -> right);
+		case OP_LSH:
+		case OP_ROT:
+			jvm_generate_shift(p, op, oper -> left, oper -> right);
 			break;
 		default:
 			gen_error("push_oper: unk op %i", op);